why does my scooby make a noise when locking it?
04 August 2010, 08:36 PM
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why does my scooby make a noise when locking it?
can anyone give me some indication what is wrong when i lock my scooby. i have a 1999 scooby when i lock it with the remote central locking fob it makes a whirring noise, this doesnt happen when i open it . has anyone got a clue as to whats wrong and how to put it right.
thanks
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04 August 2010, 10:02 PM
#8
Central door locking solenoid - nothing wrong it is normal.
. The solenoid is basically a motor attached to the driver's door lock, that acts as a bridge between the alarm signal and the central locking mechanism. They whir because they're designed for more up-down travel than what's actually needed to activate the lock, so they keep on trying to push for a couple of seconds afterwards.
07 August 2010, 04:46 PM
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Khusky, as above, there is almost certainly nothing wrong here so if I were you, provided the lock is working correctly and reliably, I wouldn't go changing anything.
Slight correction/addendum to what has been said above. The lock unit in the doors does not contain a (linear) solenoid. Some cars do but not yours; each lock unit contains a small (rotating) electric motor connected by a pair of gears to the lock mechanism. The motor is switched on and off by the central locking timer.
When the motor operates to lock or unlock the door, it winds up a spring. When the power is removed from the motor by the central lock timer, the spring unwinds and returns the mechanism to its "neutral" position. This causes the motor to rotate backwards slowly. When the car's new it's so silent you'd barely notice it. As the units age and the grease and oil hardens or subsides, they can often get louder. This is what's happened to yours. If you go round your car listening to each door in turn as you lock and unlock it, you'll hear that they all make a noise - albeit more quietly.
As above provided the car is still locking and unlocking all its doors reliably there is no reason to go replacing stuff. If you really wanted you can strip down and regrease the lock mechanism which will sort the noise out for another 10-15 years.
Slight correction/addendum to what has been said above. The lock unit in the doors does not contain a (linear) solenoid. Some cars do but not yours; each lock unit contains a small (rotating) electric motor connected by a pair of gears to the lock mechanism. The motor is switched on and off by the central locking timer.
When the motor operates to lock or unlock the door, it winds up a spring. When the power is removed from the motor by the central lock timer, the spring unwinds and returns the mechanism to its "neutral" position. This causes the motor to rotate backwards slowly. When the car's new it's so silent you'd barely notice it. As the units age and the grease and oil hardens or subsides, they can often get louder. This is what's happened to yours. If you go round your car listening to each door in turn as you lock and unlock it, you'll hear that they all make a noise - albeit more quietly.
As above provided the car is still locking and unlocking all its doors reliably there is no reason to go replacing stuff. If you really wanted you can strip down and regrease the lock mechanism which will sort the noise out for another 10-15 years.
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